cleanup and expand testing

[kevmoo]

• test on node in http and web_socket
• add wasm testing to web_socket

Closes #1126

[github-actions]

PR Health

License Headers ✔️

// Copyright (c) 2026, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

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pkgs/cupertino_http/example/example.dart
pkgs/http/example/main.dart
pkgs/http_multi_server/test/cert.dart

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Unused Dependencies ⚠️

Package	Status
cupertino_http	❗ Show Issues These packages are used outside lib/ but are not dev_dependencies: * flutter * integration_test These packages are only used outside lib/ and should be downgraded to dev_dependencies: * hooks * logging * native_toolchain_c These packages may be unused, or you may be using assets from these packages: * dart_flutter_team_lints Failed to update packages.
http	❗ Show Issues These packages may be unused, or you may be using assets from these packages: * dart_flutter_team_lints
web_socket	❗ Show Issues These packages may be unused, or you may be using assets from these packages: * dart_flutter_team_lints

For details on how to fix these, see dependency_validator.

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Coverage ✔️

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Breaking changes ✔️

Package	Change	Current Version	New Version	Needed Version	Looking good?
cupertino_http	Breaking	2.4.0	3.0.0-wip	3.0.0-wip	✔️
http	None	1.6.0	1.6.1-wip	1.6.1-wip	✔️
web_socket	None	1.0.1	1.0.1	1.0.1	✔️

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API leaks ✔️

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API.

Package	Leaked API symbol	Leaking sources

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[kevmoo]

pkg:http - The changelog bit was related to a dev dependency